Incrementing VERSION to 74.0.3729.3

TBR=cmasso@chromium.org

Change-Id: Ic7470d329a4fe6cee03e41374730498491dca836
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1513118
Reviewed-by: chrome-release-bot@chromium.org <chrome-release-bot@chromium.org>
Cr-Commit-Position: refs/branch-heads/3729@{#6}
Cr-Branched-From: d4a8972e30b604f090aeda5dfff68386ae656267-refs/heads/master@{#638880}
1 file changed